BaT sidecar rig for sale, that is a "Leaner" rig

Currently on Bring a Trailer, there is a 2024 Vespa 300 with a sidecar, that is a LEANER sidecar rig. Still has 6 days to go, located in Miami, Flo-Rida, and what it odd about this little rig, is that the Seller, nor BaT officials noted that this sidecar rig is a LEANER.

https://bringatrailer.com/listing/2024-vespa-gtv-300/

In this case, the sidecar itself stays statically upright, whilst the Vespa 300 scooter can still lean. It is attached via a hinged mounting system, with two horizontal dampeners under the hinge, to dampen any sudden movements between the scooter and the sidecar.